Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Face Piece
Definition(s)
Face Piece
Face piece means a face covering that is designed to form a complete seal around the eyes, nose and mouth which is secured in position by a suitable means. Source: IMO Resolution MSC.98(73), Adoption of the International Code for Fire Safety Systems (FSS Code), 5 December 2000, International Maritime Organization. Regulatory Guidance. Source: IMO resolution MSC.98(73), The International Code for Fire Safety Systems, 5 December 2000, International Maritime Organization. Regulatory GuidanceFire Safety Systems Code
Definition(s)
Fire Safety Systems Code
Fire Safety Systems Code means the International Code for Fire Safety Systems as defined in chapter II-2 of the International Convention for the Safety of Life at Sea, 1974, as amended. Source: IMO Resolution MSC.98(73), Adoption of the International Code for Fire Safety Systems (FSS Code), 5 December 2000, International Maritime Organization. Regulatory Guidance. Source: IMO resolution MSC.98(73), The International Code for Fire Safety Systems, 5 December 2000, International Maritime Organization. Regulatory GuidanceFire Safety Systems Code
Fire Safety Systems Code means the International Code for Fire Safety Systems as adopted by the Maritime Safety Committee of the Organization by resolution MSC.98(73), as may be amended by the Organization, provided that such amendments are adopted, brought into force and take effect in accordance with the provisions of article VIII of the present Convention concerning the amendment procedures applicable to the annex other than chapter I thereof. <Chapter II-2, part A, regulation 3> Source: IMO Resolution MSC.99(73), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 5 December 2000, International Maritime Organization. LegislationSwitch-Off Time
Definition(s)
Switch-Off Time
"Switch-off time" means the period of time required for luminous intensity to decrease to 5% of the required luminous intensity after the daylight signalling lamp has been switched off. Source: IMO Resolution MSC.95(72), Recommendation on Performance Standards for Daylight Signalling Lamps, 22 May 2000, International Maritime Organization. Regulatory Guidance.Switch-On Time
Definition(s)
Switch-On Time
"Switch-on time" means the period of time required for reaching 95% of the required luminous intensity after the daylight signalling lamp has been switched on. Source: IMO Resolution MSC.95(72), Recommendation on Performance Standards for Daylight Signalling Lamps, 22 May 2000, International Maritime Organization. Regulatory Guidance.Daylight Signalling Lamps
Definition(s)
Daylight Signalling Lamps
"Daylight signalling lamps" means lamps suitable for transmitting white light signals to an observer by focused light beams which may be fixed or portable. Source: IMO Resolution MSC.95(72), Recommendation on Performance Standards for Daylight Signalling Lamps, 22 May 2000, International Maritime Organization. Regulatory Guidance.Garbage
Definition(s)
Garbage
Garbage means all kinds of food wastes, domestic wastes and operational wastes, all plastics, cargo residues, cooking oil, fishing gear, and animal carcasses generated during the normal operation of the ship and liable to be disposed of continuously or periodically except those substances which are defined or listed in other Annexes to the present Convention. Garbage does not include fresh fish and parts thereof generated as a result of fishing activities undertaken during the voyage, or as a result of aquaculture activities which involve the transport of fish including shellfish for placement in the aquaculture facility and the transport of harvested fish including shellfish from such facilities to shore for processing. Source: Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationFood Wastes
Definition(s)
Food Wastes
Food wastes means any spoiled or unspoiled food substances and includes fruits, vegetables, dairy products, poultry, meat products and food scraps generated aboard ship. Source: Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationFixed or Floating Platforms
Definition(s)
Fixed or Floating Platforms
Fixed or floating platforms means fixed or floating structures located at sea which are engaged in the exploration, exploitation or associated offshore processing of sea-bed mineral resources. Source: Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationFishing Gear
Definition(s)
Fishing Gear
Fishing gear means any physical device or part thereof or combination of items that may be placed on or in the water or on the sea-bed with the intended purpose of capturing, or controlling for subsequent capture or harvesting, marine or fresh water organisms. Source: Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationDomestic Wastes
Definition(s)
Domestic Wastes
Domestic wastes means all types of wastes not covered by other Annexes that are generated in the accommodation spaces on board the ship. Domestic wastes does not include grey water. Source: Resolution Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationCooking Oil
Definition(s)
Cooking Oil
Cooking oil means any type of edible oil or animal fat used or intended to be used for the preparation or cooking of food, but does not include the food itself that is prepared using these oils. Source: Resolution Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationCargo Residues
Definition(s)
Cargo Residues
Cargo residues means the remnants of any cargo which are not covered by other Annexes to the present Convention and which remain on the deck or in holds following loading or unloading, including loading and unloading excess or spillage, whether in wet or dry condition or entrained in wash water but does not include cargo dust remaining on the deck after sweeping or dust on the external surfaces of the ship. Source: Resolution Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationAnimal Carcasses
Definition(s)
Animal Carcasses
Animal carcasses means the bodies of any animals that are carried on board as cargo and that die or are euthanized during the voyage. Source: Resolution Resolution MEPC.201(62), amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships, 1973 (Revised MARPOL Annex V), 15 July 2011, International Maritime Organization. LegislationBlock Section
Definition(s)
Block Section
"Block section" means the cross-sectional area (m2) of the catalyst block based on the outer dimensions. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceLV (Linear Velocity) Value
Definition(s)
LV (Linear Velocity) Value
"LV (linear velocity) value" means a value of the exhaust gas flow rate passing through the catalyst blocks (m3/h) per catalyst block's section (m2) in a normal direction of exhaust gas flow. Therefore, unit of LV value is (m/h). The exhaust gas flow volume is the volume defined at 0°C and 101.3 kPa. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceTotal Volume of the Catalyst Block
Definition(s)
Total Volume of the Catalyst Block
"Total volume of the catalyst block" means the volume (m3) based on outer dimensions of the catalyst block. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceSV (space velocity) value
Definition(s)
SV (space velocity) value
"SV (space velocity) value" means a value of the exhaust gas flow rate passing through the catalyst block(s) (m3/h) per total volume of the catalyst block(s) in the SCR chamber (m3). Therefore, unit of SV value is (1/h). The exhaust gas flow volume is the volume defined at 0°C and 101.3 kPa. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceAV (area velocity) value
Definition(s)
AV (area velocity) value
"AV (area velocity) value" means a value of the exhaust gas flow rate passing through the catalyst blocks (m3/h) per total active surface area of the catalyst blocks in the SCR chamber (m2). Therefore, unit of AV value is (m/h). The exhaust gas flow volume is the volume defined at 0°C and 101.3 kPa. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceReductant Injection System
Definition(s)
Reductant Injection System
"Reductant injection system" means a system, which consists of the pump(s) to supply reductant to the nozzle(s), the nozzle(s) spraying reductant into the exhaust gas stream and control device(s) of the spray. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceSCR Chamber
Definition(s)
SCR Chamber
"SCR chamber" means an integrated unit, which contains the catalyst block(s), and into which flows exhaust gas and reductant. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceCatalyst Block
Definition(s)
Catalyst Block
"Catalyst block" means a block of certain dimension through which exhaust gas passes and which contains catalyst composition on its inside surface to reduce NOx from exhaust gas. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceEngine System Fitted with SCR
Definition(s)
Engine System Fitted with SCR
"Engine system fitted with SCR" means a system consisting of a marine diesel engine, an SCR chamber and a reductant injection system. When a control device on NOx-reducing performance is provided, it is also regarded as a part of the system. Source: Resolution MEPC.198(62), 2011 Guidelines addressing additional aspects to the NOx Technical Code 2008 with regard to particular requirements related to marine diesel engines fitted with Selective Catalytic Reduction (SCR) Systems, 15 July 2011, International Maritime Organization. Regulatory GuidanceAdverse Conditions
Definition(s)
Adverse Conditions
Adverse conditions "Adverse conditions" mean sea conditions with the following parameters:|
Significant wave height hs, m |
Peak wave period TP, s |
Mean wind speed Vw, m/s |
|
5.5 |
7.0 to 15.0 |
19.0 |